Table P-X
Points of the Outer Yff Triangle.
Points available at the Kimberling's Encyclopedia ETC.
The ETC version: The 8998 points version of 2015.
The "Discoverer" database version: October 2013.
Last update: 2016-04-29

      Role     Kimberling Notation  
  1     X(1) Incenter of the Outer Yff Triangle     X(1)   Incenter  
  2     X(3) Circumcenter of the Outer Yff Triangle     X(56)   External Center of Similitude of Circumcircle and Incircle  
  3     X(4) Orthocenter of the Outer Yff Triangle     X(1479)   Center of the Outer Johnson-Yff Circle  
  4     X(5) Nine-Point Center of the Outer Yff Triangle     X(496)   Harmonic Conjugate of the Johnson Midpoint  
  5     X(6) Symmedian Point of the Outer Yff Triangle     X(613)    
  6     X(10) Spieker Center of the Outer Yff Triangle     X(1210)    
  7     X(20) de Longchamps Point of the Outer Yff Triangle     X(4299)    
  8     X(40) Bevan Point of the Outer Yff Triangle     X(46)   Prespector of the Excentral Triangle and the Orthic Triangle  
  9     X(55) Internal Center of Similitude of the Incircle and the Circumcircle of the Outer Yff Triangle     X(8069)    
  10     X(109) of the Outer Yff Triangle     X(1795)    
  11     X(119) of the Outer Yff Triangle     X(11)   Feuerbach Point  
  12     X(355) Center of the Fuhrmann Circle of the Outer Yff Triangle     X(1837)